A) \[2\pi \mu V\]
B) \[\pi \mu V\]
C) \[\frac{\pi }{2}\mu V\]
D) \[2\,\mu V\]
Correct Answer: B
Solution :
Magnetic flux \[\phi =B.A\] \[=B.\pi \,{{r}^{2}}\] Induced emf, \[|e|=\frac{d\phi }{dt}=B\pi 2r\frac{dr}{dt}\] \[=0.025\times 2\times 2\times {{10}^{-2}}\times 1\times {{10}^{-3}}=\pi \mu V\]You need to login to perform this action.
You will be redirected in
3 sec